I 1778x508x12.7x22.2 AHMSA · Weight & Dimensions

AHMSA, welded sections · Wide Flange (I-beam)

Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.

Also known as: I 1778x508x12.7x22.2 (México) · Doble T I 1778x508x12.7x22.2 (Argentina / LATAM) · UB 1778 (UK / Australia)

The I 1778x508x12.7x22.2 steel profile weighs 349.9 kg/m (235.14 lb/ft), has a depth of 1778 mm (70.00 in), flange width 508 mm (20.00 in). Cross-sectional area: 44,571.92 mm². Moment of inertia Ix = 2,289,843.925 cm⁴, Iy = 48,535.302 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	1778 mm	70.00 in
Width (b)	508 mm	20.00 in
Web thickness (tw)	12.7 mm	0.50 in
Flange thickness (tf)	22.2 mm	0.87 in
Weight	349.9 kg/m	235.14 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	44,571.92 mm²	69.086 in²
Moment of inertia (Ix)	2,289,843.92 cm⁴	55013.50 in⁴
Moment of inertia (Iy)	48,535.3 cm⁴	1166.06 in⁴
Elastic section modulus (Sx)	25,757.52 cm³	1571.827 in³
Elastic section modulus (Sy)	1,910.84 cm³	116.607 in³
Plastic section modulus (Zx)	29,343.26 cm³	1790.643 in³
Plastic section modulus (Zy)	2,934.41 cm³	179.070 in³
Radius of gyration (rx)	71.68 cm	28.219 in
Radius of gyration (ry)	10.44 cm	4.108 in